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Finding the Fourth Proportional to 243,609.72, 365,444.28 and 103,320.96

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Solution

The fourth proportional to 243,609.72, 365,444.28 and 103,320.96 is: 154,994.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,609.72 : 365,444.28 = 103,320.96 : x
  2. Step 2: Convert to fraction form
    243,609.72/365,444.28 = 103,320.96/x
  3. Step 3: Cross multiply
    243,609.72x = 365,444.28 × 103,320.96
  4. Step 4: Simplify right side
    243,609.72x = 37,758,053,836.11
  5. Step 5: Solve for x
    x = 37,758,053,836.11/243,609.72
  6. Step 6: Final answer
    x = 154,994.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.